Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Jul. 01, 2018	Jul. 01, 2018	Jul. 02, 2017	Apr. 26, 2018	Oct. 01, 2017
Equity, Class of Treasury Stock [Line Items]
Authorized shares of common stock	2,400,000,000	2,400,000,000			2,400,000,000
Par value of common stock	$ 0.001	$ 0.001			$ 0.001
Authorized shares of preferred stock	7,500,000	7,500,000
Outstanding shares of preferred stock	0	0
Shares of common stock repurchased		73,000,000	22,400,000
Total cost of common stock repurchased		$ 4,111.5	$ 1,254.1
Shares available for repurchase	107,300,000	107,300,000
Cash dividend declared to shareholders	$ 0.36	$ 0.36
Stock Repurchase Program, Authorized Amount				$ 100.0
Dividends payable, payment date	Aug. 24, 2018
Dividends payable, record date	Aug. 09, 2018